This “Pilot’s Tip of the Week” was originally published on 12/09/2015. To get free tips like this each week, subscribe at the bottom of the page.

Pilot's tip of the week

Calculating True Airspeed


Subscriber question:

 "What's the best way to determine true airspeed?" - Archer H.


“For planning purposes, the first place I would go would be your Pilot Operating Handbook and in a modern handbook you would look in Section #5 – Performance. Find the cruise performance charts that indicate true airspeed (as well as fuel consumption) at various altitudes, power settings and temperatures.

airspeedIf you are dealing with an older airplane without a detailed POH, you can develop TAS via an E6B flight computer by inputting altitude, temperature, and indicated airspeed. You can also use this technique with a modern airplane to verify or fine tune the numbers found in the performance section of the POH.

Lastly, if your airplane has an airspeed indicator equipped with a true airspeed ring, you can input altitude and temperature and read true airspeed on your airspeed indicator.

Know your Pilot Operating Handbook and become familiar with the information available for your aircraft.”

(NEW) VFR Mastery scenario #70 “Next Step, Climb?” is now available. How hot is too hot in an airplane with simple engine instrumentation and showing no other sign of distress? What do you do when the POH guidance provides no useful guidance at all. Is this an emergency, business as usual, or something in between? Watch the Intro video.

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